Biology

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  • Created by: HafsaRaf
  • Created on: 20-02-15 22:24
homeostasis
maintaining a constant internal environment - it involves controlling temperature (thermoregulation), water (osmoregulation) and the amount of sugar in your blood.
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thermoregulation - hot
when you are hot that means your sweat cools the skin by evaporating. then your erector muscle relaxed so body hair lies flat. More blood flows through blood vessels nearer surface, so more heat is lost to its surroundings.
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thermoregulation - cold
when you are cold , your erector muscle makes body hair stand up which traps air to keep your body warm, blood flow in capillaries decreases,
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osmoregulation- gain of water
Our bodies take in water from food and drinks. We even get some water when we respire by burning glucose to release energy.
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osmoregulation - loss of water
We lose water in sweat, faeces, urine and when we breathe out (on a cold day you can see this water as it condenses into vapour).
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vasoconstriction
blood vessels are smaller
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vasodilation
blood vessels are bigger
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Other cards in this set

Card 2

Front

when you are hot that means your sweat cools the skin by evaporating. then your erector muscle relaxed so body hair lies flat. More blood flows through blood vessels nearer surface, so more heat is lost to its surroundings.

Back

thermoregulation - hot

Card 3

Front

when you are cold , your erector muscle makes body hair stand up which traps air to keep your body warm, blood flow in capillaries decreases,

Back

Preview of the back of card 3

Card 4

Front

Our bodies take in water from food and drinks. We even get some water when we respire by burning glucose to release energy.

Back

Preview of the back of card 4

Card 5

Front

We lose water in sweat, faeces, urine and when we breathe out (on a cold day you can see this water as it condenses into vapour).

Back

Preview of the back of card 5
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